Liquid-level gauge



Apr. 17, 1923.

A. B. SHULTZ LI UID LEVEL GAUGE I Filed May 5, 1922 Patented Apr. 17,1923.

NI ED- ATES ALBERT B. SHULTZ, or BUrrALdivnw YORK..

'20 a vide aliquid gauge for this purpose which .is comparatively simpleand inexpensive in To all whom it may concern 1,451,965 P TE OFFICE.

LIQUID-LEVEL GAUGE.

npplication filii May 3,

This invention relates to a gauge which is designed to indicate'thevariations of the level of a liquid and more particularly. to a gauge ofthis character which may be used on the radiator of an automobile forjthe purpose of indicating the height of the Water therein 'andthusenable the attendant to replenishthe radiator with water from timetotime, as required, for maintaining the same in thehighest state ofefiiciency and also avoid injury to the parts'associated with theradiator.

:It is the object of this invention to proconstruction', which can bereadily applied to the. standard typesv of radiators now on theemarketand which will give a reliable indication when the water in the radiators below normal. j i a In the accompanying drawings: Figure 1 is. avertical sectional elevation of'an auto mobile radiator equipped with myimproved liquid gauge. Figures 2 and 3 are horizontal sections taken onthe correspondingly numbered lines inFig. 1;

Similar characters of reference refer to like parts throughout theseveral views.

My invention is useful for indicating the variations in the level of aliquid which may be contained in receptacles of various kinds, but moreparticularly the water level within the upper tank or box 10 of anautomobile radiator, which latter is provided in its top with an uprightfilling nipple or collar 11 through which the water is introduced fromtime to time to replenish waste due to leakage and evaporation.Ordinarily this fill ing collar 11 is closed by means of an ordi naryscrew cap, which is detachably connected with the collar by nieansof ascrew joint and provided in its top 13 with a central opening 14.

My improved liquid gauge is mounted on this cap or cover and in itspreferred form the same is constructed as follows Projecting downwardlythrough'the opening 14.- in the top of the filler cap is a tubularnipple or body 15 which in its preferred 1922. Serial No. ssaoe form hasits lower end provided with an internal flange 17, the central part ofwhich is provided with a perforation 18. Above the filler cap isarranged a hood, dome or casing 19 of hollow form which in the preferredconstruction is of larger diameter than the nipple and has its lower endconnected with the upper end of thesame by a horizontal web 20 whichforms a downwardly facing shoulder 16 on the underside of the webengaging the upper side of the top 13,said

nipple, dome and web being preferably 1 formed in one piece by castingorotherwise. On the upper part "of the front and rear sides of this hoodthe same is provided with sight openings 21, 21, whichpermit-ofIobserving the interior of this hood fromv the front and rearsides thereof.

Sliding vertically in the opening 18 and guided by the latter is'anupright shifting rod 22, the upper part of which terminates within thehood and isprovided in the latter with an indicator head23 which in thepreferred form has the shape of a sphere, as shown in Figs. land 2, andis connected with the shifting rod by means of a screw joints To thelower end ofthisshifting rod 1 i is secured a float 24 which is adaptedto ride on the liquid within the tank or receptacle 10 and rise and falltherewith in response to variations in the level 'of the liquidwithin'the tank." This float maybe of anyysuitable construction, but asshown in the drawings, the same is preferably made in the form of ahollow sheet metal body and secured by means of a screw end of theshifting rod.

The nipple 15 is secured in place on the filler capby means ofa clampingscrew nut 25 engagingwith an external screw thread on the lower end ofthis nipple and bearing against the underside of the cap top 13 throughthe medium of an interposed washer 26, thereby holding the nipple 15 andhood 19 in place on the filler cap and also forming a leak-tight jointbetween the same. On

one side, the clamping nut 25 is provided a with a downwardly projectingguide arm 27 which latter is provided at its lower end joint to thelower with a guide eye 28 which receives the lower part of the shiftingrod 22 above the float vertical movements and maintain the float andindicator head in their proper positions.

When the level of the liquid in the tank or p will be either wholly orpartly concealed from View through the sight opening and thuswarn theattendant that the water supin the, tank requiresreplenishing. It willtherefore be evident that by these means the attendant can always keepav careful watch on thesupply of waterin the radiator without"necessitating the removal or ,the filler capffor this purpose and thusensure maintaining the 'radiator in its highest state of efiiciency andpreventing injury to. any

I the parts associated 'therewith iwhi'ch would be liable'to occur ifthe water level ,b ec oi rie slunduly 19w or exhausted.,

a y mounting this liqui' dTgau'ge on th e radiato r fille r cap the.same is renioved f om .pearan'ce. a

the radiatortank with the cap, and, restored thereto as a unit, therebyavoiding the use of any extra parts whichlare liable to becomemisplacedand also avoiding the n ecessity of alteringthe tank oroperative parts tliepraldi'atorfor thep'urpose of applying this11iquid.gauge thereto. V In its general organization this liquid g'auge'is very"simple in construction and reliable in operation and is sightly in ap-I claim asmy invention: y 1..A l1qu1.(lle,vel gauge coinpr s ing a capadapted to be mounted on the receptacle con tainin g the liquidto'begaged and having an opening in its top, a nipple arranged in saidopening and having a shoulder at its upper end and an internalperforated flange at its lower end, a hoodarranged at the upper end ofsaid nipple and having a sight opening, a vertically movable shiftingrodguided in the perforation of said flange and provided at its upperend with an indicator head which is adapted to move vertieallyrelativeto said sight opening, a float mounted onthe lower end of said rod andadapted to respond to variations ;in the height of the liquid in saidreceptacle, a sc're'w 'nu tgarranged on the lower part of said nippleand engaging with the undersidejof the top of said capya'nd a guidearmdepending from said screw nut andjprovided'atits lower'encl with aneye in which the 'lojwer part-o'f said shifting rod is guided. y v

p 2. A liquidlevel gauge'comprising' 'a cap adapted. to befmoun tedonthereceptacle containingfthe liquidito begagedfandfha ing said opening andhaving a'laterally extending web forming a downwardly facingshoulderwhic h' engages 'ivith'the top" of said cap and an internalperforated'fiange atflts lower end a hood o'f largeidihmeter than saidnipple and having its lower end connected with said web and'lprovided inits upper part with asight ppening vertically movablelshiftingrod'slidiiig in the'per foration dfsaid lowerfiange andp'rovided at1tsupper end w th an nd cator h'e'adwlnch is movable verticallyrelatively'to 's'aidsight open ng rne ans for securing sa d nipple insaid cap anjd a float arranged "at the lower end {said rod and adaptedtori'se linden with the liquid level in said receptacle.

ALBERT B. SHULTZ.

